Abstract
The binuclear nitrosyl complexes Q2[Fe2S2(NO)4], where Q=Me, Et, Prn, and Bun, were synthesized. The crystals of [Pr4 nN]2Fe2S2(NO)4 were studied by X-ray analysis. The influence of the cation size on the electronic structure and symmetry of its local environment in the synthesized complexes was examined. The decrease in the isomeric shifts in the57Fe Mössbauer spectra is related to the increase in the length of the alkyl substituent chain of the quaternary tetraammonium cation and is consistent with changing the structural parameters: a decrease in the bond angle of the Fe−NO bond and stretching vibrations of the NO groups due to changes in intermolecular contacts.
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Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 6, pp. 1115–1118, June, 2000.
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Sanina, N.A., Filipenko, O.S., Aldoshin, S.M. et al. Influence of the cation on the properties of binuclear iron nitrosyl complexes. Synthesis and crystal structure of [Pr4 nN]2[Fe2S2(NO)4]. Russ Chem Bull 49, 1109–1112 (2000). https://doi.org/10.1007/BF02494905
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DOI: https://doi.org/10.1007/BF02494905